Anthropogenic Climate Change, Peak Oil and the Great Recession are a Perfect Storm of problems which feed back on each other, reinforced further by their causes and/or effects as well as other positive feedbacks such as resource limitations.
The Future will be Non-linear.

Saturday, September 3, 2011

Current State of the Arctic Sea Ice: Arctic Sea Ice Predictions Update II

Sea Ice Extent
The final 2007 minimum extent compared to the present make it seem doubtful a new extent record will be reached unless we have unusual heat and ideal weather for melt over the next two weeks. From Cryosphere Today:

If melt continues down to where we see more compacted ice in the images above, a rough estimate of the areas of compact ice in the '11 images correspond well to the '07 extent, so we'll be looking at a near-record or new record, if so.

and expected to be mildly positive or mildly negative till the middle of the month which should help reduce ice loss. Current sea ice drift patterns seem to encourage ice loss and a possible reduction in extent. The large area of loose ice looks to be moving toward the center of the pack; given how loose it is, it could reduce to 1/4 its current area by rough estimate. The yellow box indicates an area of very little ice, also, appearing to be a place where sea ice goes to die this season. There also is a flow from both of Greenland toward the Fram Strait which would indicate significant transport out of the Arctic Ocean. These patterns can change quickly and may only be significant if they persist.

Air temps where the ice pack is sitting are hovering around 0C. Since sea ice is slightly colder than freezing, there is probably still a net melting effect from air temps. Sea surface temperatures look to be about ice temperature, but warm around the ice. I suspect also under it yet since the water around the ice pack is reading warmer than the ice, but in the area of the pack is reading about ice temp. Sounds like a sampling problem?

Sea Ice Area
This measure is more important than extent for assessing current state of the ice, but is more difficult to measure. Current analyses put ice area at or near the '07 record. The melt season could another 2 - 2.5 weeks. Even with favorable-to-neutral conditions for low melt rates, a new record here is almost a guarantee.

According to Cryosphere Today, ice area is already below 3 m sq km.

Ice area measures the total surface area of the ice excluding areas of water between floes. Given much of the ice around the edges of the main pack is very thinly distributed, and the ice is very thin, we should see enough melt to set a new record. less than 10k sq km /day will take area below 2.9m sq. km.

Sea Ice Volume
Sea ice volume is further from a record than area and extent are...

and this image from Sept 14, 2010 supports this.

PIOMAS does show ice volume already tracking below the '07 minimum.

The PIOMAS models should at least comparable to themselves
year-to-year, but there are doubts about the new model as illustrated
from comments at RealClimate's thread on Arctic Sea Ice.

I have reservations about the volume numbers and ice thickness models.
The piomas version 2 model that was introduced this spring shows
considerably higher thickness values. The navy, for example (http://www7320.nrlssc.navy.mil/hycomARC/navo/arcticictnnowcast.gif)
reports two to three meter thick ice all around the north pole. Russian
and American science vessels recently met at the pole and reported
actual thickness of a meter or less.

The first ice thickness measurements confirm this: in 2011 as well as in 2007 most of the ice has an ice thickness of 0.9 m.

A recent post from the polar Stern (in German) speaks of the condition of the ice as being very poor. They are having a very hard time finding ice thick and intact enough to do their research activities.

The graph below from that post illustrates the thinness of the ice. Of course, anyone who has seen footage of Arctic ice, particularly from below, knows it is anything but one large flat ice floe. The ice gets squished together and stacks up in piles and ridges. What is interesting is that old footage used to show large blocks of multi-meter ice that was contiguous. Now images and film I see only shows jumbled up ice, as if the only thick ice exists because of ice motion and not freezing. The spikiness in this graph encourages me to consider this as a serious possibility.

Also, that spikiness is reflected in the images we see of the "cottage cheese" pattern of ice I have discussed earlier in which individual floes are surrounded by what can only be thinner ice.

Unfortunately, the MODIS images have been too cloudy to get a good look at the ice for a while. This radar image gives a fair sense of the ice and with more detail and accuracy than the Cryosphere Today images.

In fairness to PIOMAS, new models take time to calibrate and refine. If the changes they made this year are an improvement, I still think it is certain they are overestimating ice volume for now. Still, lower than 2010? Perhaps not. We didn't have a strong melt this summer.

It's a mixed bag. A probable new record in Ice Area, a slightly possible new record in Ice Extent and a new 2nd lowest Ice Volume. I do think the volume numbers are not highly reliable and the first-had reports do indicate a likely new Ice Volume record, but that would also mean the numbers for 2010 volume were too low or that 2011 numbers are far too high. We may have to wait a year or two to find out.

1 comment:

Very interesting site indeed. All of which is very true. Climate change is the canary in the coal mine- which way too many people are not taking seriously. Most economic blogs never mention how this will effect the future. Their mistake.

As long was prolong any reduction in C02- it makes makes the future all the more bleaker.

What scares so many conservatives is that the capitalistic economy cannot be sustained on fossil fuels now. Rapid growth, in the past we made possible by cheap and available energy- coal, or, gas- that must end. So you can see why their denial of climate change is so vehement.

Where We Stand

Economic CrisisPeak Oil* Peak production appears to have occurred in 2005 or 2008. Certainly, production has been on a plateau since 2004-5. The recession and the high prices from last year caused falling demand. This is brought on lower prices. That caused new production projects to be slowed, delayed or stopped. Because starting up projects takes much longer than shutting them down, this will likely lead to oil shortages if the economy and demand rebound, certainly by 2012 or so.

UPDATE Nov. '09: The new IEA World Energy Outlook revised **downward** to 105 million barrels a day it's projections for future oil production. What they are saying is, over the next 20 years, we won't be finding much oil. Whistle blowers, one still employed, one not, say even this is wishful thinking. We agree. We have thought so for two or three years. They also say the decline rate is higher than admitted - and it was already 4.2%!!! This means we are looking at, what? Six percent? Eight? At six percent we lose the equivalent of Saudi Arabia every two years. Of course, we aren't finding that much new, recoverable oil each year and haven't for decades. Where's the extra coming from?

** Peak occurred from 2005 to 2008. It is slightly possible we could exceed past production in the next two years *if* there is economic growth as there is some spare capacity and some new spare capacity came on this year. There appears to be just enough new oil coming online - or there would have been if projects hadn't been shut in due to the economic crash - the next two years to barely stay even. After that, decline will have eaten away two Saudi Arabias and it will be impossible to reach a new high.* Production surpasses new oil discoveries by a margin of 3 :1 or 4:1. This is unsustainable.*The global economic downturn may decrease these numbers, which would help slow the fall down the back slope of the decline curve.

* OPEC has announced (1/2/08) future production is in peril. Many believe OPEC cannot raise their current production by more than 3 million barrels a day. Ever. Or can do so only at the cost of future production. I.e., they must choose between their own citizens and the rest of the world.* A nice, but older, overview (.pdf). Its age, 2005, makes the time lines a little longer than seems probable. Still, excellent forecasting.

People & Power - Peaked - 06 Jan 08 - Part 1.(Part 2 can be found on youtube.)An excellent overview of Peak Oil right now.Climate Change* James Hansen, et al., published some very important papers(article) this year. Conclusions are thus:

1. The world is at @ 392 ppm CO2, but irreversible climate change happens at just 350, which we passed decades ago. This is why time is shorter than it seems.

2. The goal now is to stop warming at only 2 degrees C. This will still mean seas rising a meter or more and climate change globally, but we may be able to stabilize there. It also means reducing carbon emissions by 90% by 2100. That's creating an entirely new energy system in less than a century. We did that already, but that was when there was virtually no infrastructure in place.

3. Action must be taken in a very short time period. Waiting ten years is almost certainly too long. The silver lining that comes with Peak Oil? It may give us no choice but to act sooner rather than later. The solutions for Peak Oil and Climate Change are the same (except for bio-fuels.) This situation is unprecedented in human history.*The Arctic melted to an extraordinary degree in 2007 and nearly as much in 2008 - despite perfect conditions for 2008. This is THE canary in the coal mine. Back in February, when the first of three IPCC (Those rock-n-rollers of recent Nobel fame.) reports came out and didn't include ice melt in their projections, I was stunned. Various scientists, also. I knew viscerally that change was coming faster than they stated. Much faster. The summer melt validated that view. Hold on to your hats. f you know anything of Chaos, bifurcations, tipping points and non-linear systems, you're probably as scared as I am.

* New findings of methane being released from the Arctic permafrost and sea floor, along with increased atmospheric methane are ominous signs we may be well past key tipping points. There have been massive, abrupt climate changes in the past due to the release of methan clathrates from the sea floor.

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